Question

Christina read an 80 page book in one evening. She read for 3/4 of an hour before dinner and then read the rest of the book in 1 3/4 hours after dinner. What was the average number of pages per hour that Christina read?

Answer 1

Answer: 32 pages per hour

Explanation:

First find out the total number of hours she took to read the book:

= 3/4 + 1 ³/₄

= 3/4 + 7/4

= 10/4 hours

There were 80 pages in the book. her average per hour was:

= Pages / time

= 80 ÷ 10/4

= 80 * 4/10

= 32 pages per hour

Note: If you are to divide by a fraction, multiply by its inverse instead.